The MP18 Single Barrel Break-Action Shotgun gained world acclaim as a result of proven, world-class reliability and dependability. MP18''s rugged design has proven itself in every corner of the globe over the past 60 years. MP18''s single-shot design and perfect balance make it a favorite among discriminating, accuracy-driven shooters. The MP18 has a chrome-plated bore and chamber with a hammer forged barrel, rocking lever barrel lock, and automatic ejector/extractor (can be disabled in the field). These models have a polymer stock and a fixed modified choke.